Bobbin stripper



May 19, 1953 w. v. GooDHUE e-r AL 2,638,658

' BoBBIN STRIPPER Filed May s, 1951 5 sheets-sheet 2 g /Qforzzeys.

May 19, 1953 W. V. GOODHUE ET A).

BOBBIN STRIPPER 5 Sheets-Sheet 4 Filed May 3, 1951 L20? EL-'rela e bum i WM V Kyi fi jam dRaberi'E 5y est Zforneys.

May 19, 1953 I w. v. GooDHUE Er AL BOBBIN STRIPPER 5 Sheets-Sheet 5 Filed May s, 1951 the shuttle, thence to be caught in a receptacle placed therebelow. For use in automatic looms the bobbins are wound with an initial length of reserve yarn, termed a bunch, to insure against the filling running out before the bobbin is changed in the shuttle, which otherwise would cause mispcks in the cloth ybeing woven. Feeler-motions are provided for testing the yarn in the shuttle at each pick and when the service winding on the bobbin is exhausted, or substantially so, the feeler engages with the bobbin to initiate the operation of the filling-changing or transfer mechanism and supply a fresh bobbin to the shuttle as it is boxed at the end of the lay.

It is obvious that when the spent bobbins are ejected from the shuttle carrying a residue of yarn thereon remaining in the bunch they cannot be rewound over the bunch since the yarn must be continuous from the bunch to the service winding in order for the rllling change to be made Without a break in the yarn as it is woven into the cloth. Heretofore, it has been a common .practice to remove the spent bobbins from the loom and convey them to another location whereby, by means of a bobbin-stripper, the bunchwinding may be unwound or otherwise removed from the bobbin to prepare it for rewinding. In some cases the bunch is stripped by cutting through the coils of yarn with a knife or other sharp instrument, but this practice is objectionable as the knife is liable to slit the barrel of the bobbin and mutilate it so that the yarn will not deliver freely therefrom. Various types of bobbin-strippers have been devised for removing bunch-windings from bobbins, but in most cases they require manual operation and are not en- .tirely satisfactory in practice. It is therefore an important object of the present invention to provide a bobbin-stripper that is entirely automatic in-its operation and can be applied directly to they are ejected from the loom-shuttle, stripping Y the residual yarn therefrom, and transporting the denuded bobbins to the winding machine where they can be rewound with a new bunch continuous with the service Winding.

A particular object of the present invention, as before stated, is to provide means for preventing bobbins containing yarn after the stripping operation from being carried to the winding machine for rewinding filling thereon; the invention of our U. S. patent application Serial No. 159,814

embodying the stripper combined with an inbuilt automatic bobbin-winder in the loom for furnishing wound filling bobbins directly to the shuttle voi? the loom. In most cases the device of our application referred to above strips al1 the residual yarn from the bobbin, but in rare instances bobbins containing an amount of yarn in excess of the bunch may be received in the stripper through accident or otherwise. For example, due to improper operation of the loom the shuttle may M to remove all the filling from the bobbin. To in- .sure against such contingencies therpresent in 4 vention provides means for testing each bobbin after the stripping operation and discarding or segregating bobbins which are not completely stripped so as to prevent them from being returned to the winding machine for rewinding.

Referring to the drawings, the present improved bobbin-stripper is herein shown as comprising a compartmented casing 2 constructed substantially of sheet-metal plates for the sake of economy in cost of manufacture and adapted to be attached to, or built into, the structure of a conventional type of loom. As shown in Figs. 1 and 2, the casing 2 may comprise an upper boxlike section divided transversely into two compartments 3 and 4 by means of a removable vertical panel 5; the main or rearward compartment 3 being employed for receiving and holding the bobbins to be stripped and the separate forward compartment 4 for collecting waste yarn stripped. from the bobbins. The waste-collecting compartment 4 may have a front cover-plate B hinged to the bottom at 'l and normally latched at the top, but adapted to be swung outwardly to open the compartment, as shown in Fig. 2, for removing the waste yarn therefrom.

The upper section of the casing 2 may be mounted above a horizontally-extending box-like section 8 with openings in the bottom through which the completely or incompletely stripped bobbins are discharged into two separate chutes therebelow. A vertical wall 9 inclined rearwardly at the top forms a restricted passage through which the .bobbins descend into the compartment 8. The main chute I0 for stripped bobbins has a curved bottom with upstanding sides and extends downwardly into a rectangular compartment II for receiving the completely stripped bobbins. The compartment I I may be vsuspended from the casing 8 by means of bolts I2 inserted through ilanges I3 as shown in Fig. l, and mounted therebelow or formed as a part thereof is another compartment or receptor I5 for incompletely stripped bobbins. The last-mentioned compartment I5 enclosesthe greater portion of the chute I0 and extends therebelow in the form of a tray having an inclined bottom wall I6 as shown in Fig. 2. The compartment I5 is for receiving the incompletely stripped bobbins which roll down towards its forward end and may be removed manually from its lower tray porti-on through its upper open front. The chute IG is generally of cradle-shape having flanges I1 at the top fastened to the bottom flanges of the compartment 8 `by bolts I8 with its main portion entering through a rectangular opening I9 in the side of the lower compartment I 5. Above the mouth or opening of the chute I0 its bottom Wall is extended upwardly in a flange 2l for guiding the bob-bins down onto its sloping bottom.

As in the device of our earlier patent application referred to above, a conveyor-belt 20 reaches down into the interior of the compartment 8 and passes around a flanged pulley 22 that is driven by means later described to travel one length of the belt upwardly to another location; for example, to the automatic lling-bobbin winder incorporated directly in the loom structure. As described in our prior application and shown in Fig. l of the present drawings, the conveyor-belt 20 carries one or more permanent magnets 24 suspended from ears 25 on the belt 2i! to adapt them to be carried down into the chute I0 for making contact with the metal rings r on'the bobbins b so as to lift the stripped bobbins out of the chute and convey them to the Winder in the manner and for the purpose explained in our application aessgeee Serial-No. l-59g8l4eiiled May. 3, 1950, which: relates to; automatic bobbin-.supply means for automatic loonis;. It willA be understoodthat the horizontal compartmentztfis openrat'the top at 21 for the passage ofthe 'belt 2t ,therethrough'with its suspendedY magnets and the stripped vbobbins carried thereby. .Ithasr been statedthat the bobbins are caliperedior testing tliemto` detect any residual yarn thereonfaiterrthe stripping. operation so rthat, in. completely stripped bobbins vmay' besegregated in aseparatecompartment. For this purpose a secondary chute 3i) is locatedl above thev chute it with. itscurved. bottom wall formed at the end with an. angular projection 3l for forcing the partiallystripped bobbins laterally to cause .them to rollzofrthereirom and drop down at' the side of thevmain chute it into the-lower compartment-I5 in-amanner more fully explained hereinafter;

The upper or secondary chute 301 is provided with a tubular hinge 32 at one side, see Fig. 2, through which extends a pin tt-held in ears 35 at-'th'e-endof a hinge member 35' fastened to `the web of the channel-iron 83 whichv forms one side of the lower compartmentof the casing 21 The hinge 35i-permits the chute 3l) to swing upwardly should' a bobbin passing-into the main chute l0 engage therewith due to crowding of the bobbins in case of-improper-operation of the device. This construction is provided as sit-precautionary 1neas- .Y

ure vso that the bobbins will not jam or stick in the chute le and become inaccessible for manual removal. The chute is normally held in operativerposition bya lip 35 projecting forwardly from-the member 35 against which the chute rests.. Should the: chute be rocked or tilted upwardlybycrowding of the bobbins, immediately uponits release it will-drop back-into operative position bytheaction of gravity.

The compar'tmented casing 2 of the stripper may be mounted' on the loom 'by attaching it-to oneI of the legs L thereof las shown in Fig. l. For this purpose a vertical plate 38- is bolted to the rein-forced end flange 39 of the section 8:- A plurality-offstuds iil'projecting horizontally from the plate E36-are inserted through openings in the web of the leg- L and set up against the web1 to support the whole casing from the loom frame.

Referring to 2, the present stripper, as in that shown in our prior application, embodies a L rotary drum or mandrel fast on aL horizontal shaft Aiti-which is journaled in a bearing lil formed as part of a biracket--'fastened to vaportion of the casing 2; At the rear of the mandrel 45 is a relatively xed cylindrical 'cam 5l? formed on its peripherywith a-'helical spline or rib 5I which is engaged in slots 52 at the ends of a plurality of reciprocable ngers 55; The fingers-55 are slidably-held in' slots on the periphery-of the mandrel t5, the construction and arrangement of these partsbeing similar to that shown inour prior application to adapt the fingers to vbe reciprocatedI for pushing the coils of-yarn off from the peripheryof the mandrel i5 to discharge the waste into the forward compartment dof the casing 2; As slfiownf-in Fig.v 2, the forward ends of the fingers 55 are undercut at 5t to provide spaces for'thel yarn toenter for attaching its end tothe mandrel @das thel bobbins enter the. stripper.

vertical. shaft 'el for rotation above ahorizontalV plate 52see Fig. 3,' formed as a party ofthe bear-- The for-- ward tapered portion' of themandrel l5 projectsing-bracket dei Theldisk lit is driverribzysaffworm E@ meshingwith a. helical.gearvv |35 on: itsxshafttil, the worm Sli'being carried b-yor formedon ahori'f zontal shaft. 613i journaledr-in'. acbearing.. 6.1 for-med as a part ofthe braclretLdS.- I'hessh'aft'z carries a grooved pulleyy 68. fast-cuits? outery endlwhich is connected: by a .belt t9?. to; a:.grooved:-.pul1ey'10 fast on the' mandrel shaft et; The'imandrelishaft te; alsoJcarries-a largerpulley Hifastithereonand connected by a belt-i2zto-a lower pulley icarri'ed by a shaft l5, seeLFigs. `1,2 and-3'.'` The shaft-1.15 is journaledinabearing mi atfthe lendf of. alcurved arm il supported by a quadrantl which-1 is adjustablymounted on ab'racket lili l"byf-zneans of abolt te'. The bracket 'dais-bolted" at8-|ltof a channel-iron e211 forming-- part' of the rearward wall. of the casing compartment 8% a--correspond4h :ing channeleiron 8thextendinghorizontall'y to form thefront-wallof the casing at this-location'. The shaft-.'lfoarries-a pinion-i851,- see Fig, 2, meshing a gear-'tlfast on a'- shaft-S7 journaledi in a bearing S8 on-thebracket'lil. The; shaftiihas fast thereon the pulley 22?, seeFig.y 3, for-travel ing the conveyor-belt-Zii; previously' referred-to, which carries the magnets" 2`=f for lifting the stripped bobbins out off' the lowere compartment it, see Fig. l. Thebelt l2' passes from'thefpull'ey 'i3' to a larger pulley 30'# driven' frornthe power means of the loom, later described:I Ther-pulley ellis carried on a shaft Si iournaledA in abearing 22 on a bracket 93 fastened to the` channel-iron 32 indicated in Figi: 2, butnot h-erein'shownin detail.

IThe rotary disk Bil; referred to above; carriesa plurality of spring-fingers itt" attached to its periphery, see Figs; land 3. The ngers lfare faced with strips Ii'loresilient material such as rubber, felt or the like andI are adapted' to'be flexed arcuately as theyl are carried aroundlby the disky 50. Asshown in Fig. 3, the end: or one linger |00- Wipes againstl the siderv of theA casin'gZ' during its revolution by thediskt whilethe opposite ringer trnakes contactiwith a vertical blade H13-having its` foot iiktiastened to4 thetop of the horizontal shelfl E2' on-th'e bracket 48" as shown in Fig. 2. The fingers` i'arerevolved above the plate tito-cause one' orthe other't'o engage with the yarn trailing froml a bobbin as` it enters the stripper and carry it across'the drum or mandrel `t5'locatedth'ereb'elow for at'- tachment thereto as the yarn is drawnin undery theslottedv ends of the lingers 551 Mounted above the rotaryv dislr litiga-.relatively'flat brush Hlirheld vwithits bristles inclined. upwardly as shown in Fig. 2;v |The bristles'V are fastened in a tube lil' :held inA an 'enclosing inemV- ber lil'l formed withears M3 and i'at its opposite ends for holding it in place. A cotter pinl'i'' projecting 'through a hole in the end wall ofthe casing 2 andhooked through" ahole HI' in the earl Hiof the member lill `pivotally secures the' brush to thecasing under the tension ofasprir'i'gj H2. The adjacent endof' the spring: |12n is hooked through a hole in the other eark 109 'as shown in Fig. 3. The opposite'end" ofthe spring H2 is hooked through'a loop ll'3. in a blade H4" y having its foot secured to the topof thev plate 62T The spring H2* isv tensioned slightlyV between the brush 05 and the blade Ht'so that its, twisting. torque will rock the mounting.- member lil-(5 slightly to incline the bristles upwardly. The.

The chute is of substantially hood-shape and mounted above the upper section of the casing 2 with its lower portion projecting downwardly into the open top of the compartment 3 to adapt it to receive bobbins ejected from the loom-shuttle to guide them into the stripper, see Fig. 1. As the bobbins fall through the chute l5 into the compartment 3 their descent is guided to maintain them in vertical position as they drop onto a pivoted rest or perch |20, see Fig. 7, which is constructed and arranged substantially like that shown in our prior application rst referred to above.

The perch is pivoted on a pin |2| held in the sides of a bifurcated .bearing member |22 at the lower end of a sheet-metal arm |23. The upper end of the arm |23 is formed with ears |24 pivoted on a pin |25 extending between the sides of a folded sheet-metal bearing member |26, see Figs. 5 and 7, fastened to the outer side of the casing 2 by means of bolts |21 in its laterallyextending anges |28. A helical spring surrounding the pin |25 is held with one end V| 3| underlying one side of the bearing member |26 with its opposite end |32 engaging against the arm |23 to maintain it in vertical position parallel with the side of the casing 2. The pivoted rest or perch |20 is formed with a depending keel-like portion |35, the forward edge of which is engageable by a reciprocating slide, later described, so as to tilt the arm |23 clockwise, as viewed in Fig. 7, and withdraw the perch rearwardly from under the bobbin to adapt it to drop onto a floor or deck extending across the interior of the casing 2. The perch |20 operates in substantially the same manner as that explained in our application for patent first above referred to being normally maintained in the position shown in Fig. 7 and slightly inclined upwardly under the control of a relatively light helical spring |36 surrounding its pivot-pin |2|. Before reaching the perch |20 the enlarged head at the butt end of the bobbin b makes contact with a horizontal shelf pivoted on a pin |46 in the bearing member |26, previously referred to. The main portion of the shelf |45 projects through an opening in the side of the casing 2 and its rearward portion is bent downwardly at |41 with a weight |48 fastened thereto. The weight |48 tends to maintain the rearward end of the shelf |45 bearing against the edge of the rearward wall |49 of the sheet-metal bearing member |26 with the shelf projecting horizontally into the compartment 3 of the casing 2. The forward end of the shelf |45 is slotted to form a re-entrant opening or mouth |50 for receiving the barrel of the bobbin b as the shelf is swung downwardly into the relationship shown in Fig. 1. Fastened to the under side of the shelf |45 is a right-angular member |5| having a downwardly-projecting arm |52 .bent angularly at its end and formed with a rounded mouth or opening |53 therein, see Figs. 6 and 7. When the butt end of the bobbin strikes the shelf |45 it will tilt it downwardly about its pivot-pin |46 until the angular end of its arm |52 strikes against the side of the casing 2 as shown by dotted lines in Fig. l. As the shelf |45 is tilted downwardly the bobbin b will slide off from the shelf and its barrel will enter the mouth |50 at the end thereof. In this way the bobbin is guided to maintain it in upright or vertical relationship as it drops onto the perch |20.

Referring to Fig. 6, means are provided for engaging the butt end of each bobbin bafter it drops olf from the perch |20 to advance it along 'the deck |40 and xedly clamp it in erect position for stripping. As in the construction and arrangement of the stripper disclosed in our prior application for patent first referred to above, a pusher or ejector |55 is slidably mounted for reciprocation in a U-shaped guide-member |56 mounted on the oor |40 at the rear of the compartment 8. The push-er |55 is in the form of a rectangular bar |54 to the end of which is fastened a laterally-extending sheet-metal arm |51 having an upwardly-projecting folded portion or finger |58 at its forward end. The pusher or slide |55 is provided with a pin |59, see Figs. 5 and 7, projecting rearwardly from the bar |54 through a longitudinal slot |60 in the rear wall 82 of the casing 2 and pivotally connected to a link IGI, the opposite end. of which engages a crank-pin |62 on the arm |63 of a rotary member |65 on the shaft 9|, previously referred to.

The shaft 9| has fast thereon a bevel-gear |66 meshing with a similar gear |61, see Figs. 2 and 3, on a shaft |10 journaled in bearings |1| and |12 on the bracket 93, previously mentioned. The shaft |10 carries a one-way clutch-member |15, not herein shown in detail but of any suitable construction as usually employed. The clutch-member |15 is actuated to continuously rotate the shaft |10 by means of a pair of oscillatable arms |16 and |11 pivotally connected to oppositely-extending radial arms |18 on said clutch-member, one of which is shown in Figs. 2 and 3. The arms |16 and |11 may be oscillated from the motion of the lay-sword Z, being pivotally connected to a pin on a member |8| fastened to the sword by clamps |82 projecting through a plate |83 and held by nuts |84.

The bobbin b to be stripped is advanced into the clamping means by engagement therewith of the pusher |55 as it is slid toward the right by the link |6|, as viewed in Fig. 5. The clamping means comprises a sheet-metal plate-member having a ange |9| fastened by bolts |92 to the forward wall 83 of the casing 2. The plate |90 has one portion |93 bent rearwardly and upwardly at an angle to a vertical plane with its inclined folded portion adapted to guide the bobbins laterally as they drop from the perch |20. The remaining flat portion of the plate |90 is arranged with its edge |94 engageable with the head of the bobbin b as it rests on the lfloor |40 in the casing 2. Mounted in the casing 2 is a. wire spring |95 formed with a central straight portion |96 for engaging between the two upper steel rings r on the head of the bobbin b and angular leg portions |91 and |98 projecting therefrom at its opposite ends. One leg |91 is secured fast by a screw |99 extending through a loop at its end and secured in the rearward wall 82 of the casing 2. The opposite leg |93 of the spring |95 is bent outwardly to form an arcuate portion adapted to engage against the rearward wall 82 of the casing 2 and to slide therealong as the spring is compressed. The bobbin b being advanced into stripping position rides along the inclined leg |91 of the spring and compresses the spring as the straight portion |95 thereof engages between the two upper steel rings r on the head of the bobbin, see Figs. 4 and 7. The bobbin is thus clamped in position between the spring |95 and the edge |94 of the plate |90 to hold it Xedly during the stripping operation.

The calipering means for testing each bobbin to detect any yarn remaining thereon after a stripping operation is constituted and arranged as Lfollows: @Extending longitudinally wifi-.thiny the section r8 offthev casing'l'Z isan :upstandingiblade or p1ate203 having:.-itsffoo't 204M'eldedornotherwise fastened .ltorthe "-floorl'lfd. The plate 220.3 has a. horizontal ange'i-atthe Ltopzprojeeting at right-'anglesy therefrom?in` elevation-.above :the head rof the bobbinsuas ltheyrare 'advancedheyond the stripping position, .see''Fig 4, the forward edge of theflange 20W-being adapted to :contact with any lyarn left onta v bobhin #after xtheimmnpletion of the stripping operation. forwardly ofthe flange25is a similar iangewl carried by the movable lelernento'f-the. cali-pering fnieans which consistsfi-n `a'pivotedloar1267 Theaffianges 265 and 2&6 arepreferablyfbevelediattheirends and the flange 1206 ris slottedat:209 to zreoeive screws or: bolts?? i for acu'nstaloly attaching ,itto thexcaliper lhar/'] `:so .ithat :.itrxmay bez-.setiin propenrelation 'Ito-.thef-:bobbin to zhe'atested. The movable caliperibar 295i is'fzpii/ote'd-fonza:stud 2M at one end of itheccasingf'with itsffopposite .free end connected 'to a 'helicalzspring 245 :whichfhas its opposite end .anchored-Ito the plate :213.3 ...at 2156. The spring'lZ lcurgesithe 4m1123231 laterally to` carry the edge lof'zthe'ange1206toward the barrel of the Lbobbin `beingtested,.\axstop TZV! on the bar'sbeing adapted to fstrikeiagainstthemall of the casing to limit itsinward motion.

Asfhas .been stated, fwheneibobbin 'fisfconrpletely stripped'rit:is.advanced'ibeyondl the :clamping means by fthe engagement therewith of .the nextfsucceeding-Lbobbinf-as itis vmoved .into istripping -:position :and fthe @completely .stripped bobbin is .moved :intopos'ition-to idr-op :down `into theehute *iii to libe.removed'thererorn bylthe magnets 214 a on the conveyorkbelt 'i If .theifhobbin yis not completely stripped fthe fcalipering means-.comesinteraction tofeauseflthe mafiosi-'2&5 and 266 to engage the yarn remainingonlthe bohbin vand :prevent it I'rom dropping tinto the chute Iii. "Thenaterithe:nextsuccee'dingfoobbin iszstripped and af-thrdfibobbin advancediinto' the .clamp-ing .means '.iby :the operation -:o'f the pusherii the incoinpletely ystripped hobbinwvill befmoved .along into .position to drop :down into chute :,313 Y'theangular'projection 32E v:at its enel engages-therewith tto fcause .the fho'hhinto roll laterally o'from lthe chutegand dropdown/into the slower :eomp.artment or receptor I 5 :as.1indicated in Fig. 2. This last mentioned ejection of rthecpartially stripped bohhinfinto :the ,Chute 3 0 fis :assisted foy @means vof wauspring :2:20 ashowri in `.Figs-4'zand 5. The-,spring22 :consists fefxa iat resilient stripv .of metal vfastened at. its v'rearward end fby the holtY @9:2 `vwhich:attaches ithegpla-te i943, -,previously-1nentioned, to the twall fof "the channelmiron 83. `From the-:boltilZ 4 the spring 220 exten-ds angfularly inwan arm formed |`into v'a V-oend 22 iwith a.:r.eVerse-;bend-at.222 continued in =a straight extension 223. aWhen-fa partially strippedwhobbin :is-:advancedzbeyond fthe calipering means toaenter -the'ehnte .eEiftheSpring;-z22ii is firstf'compressed 'or retracted "by'the engagement vor the head fof Ithe'loolohin 'ridingzaacross its bend 221i. vAst-his -bohbin rides" 'beyond theapex ofthe V--loendl 22 hand engagedhy` its reversely-bent yportion'122:2the spring .will-react to--exert a. Vforoevon lthe side of' the ,head -of .the hobhiniand propel it'` forward with a sharp; .motion for insuring-that it .will .drop .down tinto rthezchute 3i).

Mounted just below-the rotary -tlram it-.is `a sheet-metal member 22.5 fastened to the'vertical portion ofthe-bearingbrachen/2,3 'by :bolts 22d projecting through zslots ...22H ,in said -.-member.

The member'225 .is formed :with'ahorizontal plate ,i223 projecting forwardly .across :the opening in the vcompartment 3,see `liigs. I2, 6 :and 7, which is slotted to.form a `re--entmnt Slot T230. As each bobbin bis advanced into'tifle'elamping means its tip end is entered in ,the slotZS-fto remain in the same relationship when the bobbin is thereafter `moved into position v'between the vcalipering members. .One'si'de of :athefslot 2.30 in the plate 228 is out away to provide afycire cular opening 232 terminating inapointedfprong 233 `which is sharpened :to Vprovide a "cutting edge. The `opening'lz is adaptedv to catch-the yarn drawing off from an incompletely stripped bobbin Vas the latter is advancedinto thezcalipering device soas to vsever this end which 'feeds hack-to the Winding-on drum to preventz-itfrom being drawn down through the chute .into the lower compartment :of the casing.

Method ,of operation The niethodof operation of the completeedevice -is explained briefly as follows: As bohbin b is ejected from the shuttle of the loom Viifzdrops down through the chute M5 into -the.casingi..2, rst passing through the bristles of the brush |05 which retains the length of yarn trail-ing from the bobbin. The rotation ofv they disk-16B revolves the fingers vmi) below the bristles Eof the brush H to rsweep Athe yarn outwardlyQ therefromand carry it around theplate or rest t2 and across the periphery of the drum-for mandreld. Theeventual l.engagementof each finger `Elli! with the-abutment termedy bythe upstanding plate like holdsthe ngerhack-to -insure that it -will lnot slidefpast :the yarn .until it has carried 'it across the mandrel-45 -andrheen caught under one or more of\thereeessed ends ofthe :fingers 55, see 2, .asthe latterare-fre ciprocated axially of the mandrel. Thef-endof the trailing yarn is vthus caught and 'held'.toy the drum 45 ltocausevit to -Wind thereon .after the bohbin has beenclamped in .stripping position in the casing 2 ftherehelow. As the hohhin b descends in the compartment v3v ofv'the casing f2 its butt -end-contacts with the counterhaianeed shelf vi435, ysee Fig. 7, to tilt the latterdownward- 1y vto the positionishown in Figzl. The' tapered barrel .of fthe -bobbin -will therefore enter -sthe opening or `month l5!) :insthe end vof-tl'ieisheliff m5 -fto yloe `guided and sustained in uprightmr vertical positionas thehase of the-boblon :seats onithe Vperch I2!) and swings theflatter'downwardl-y-into horizontal position. The shelf -M' thus acts to v,prevent the .hohoin from being cantedvas it drops onto :the'peroh i2!) Whileithe latter is tilted upwardly vby its yspring ASE. Meanwhile,thefpusher IE5 yisv'oeen .slid to the right, asviewed in Fig. Yahut after vthe Vshelf A5218 has been .swung-down into horizontal `position the 4return -rnovement of the v pusher '955 =Will cause. the linger. I5@ :at the vfend .of the pusher) L55 toengage the for-Wardwedgef of thevkeeldaon the perch |729 v1;o;force-..the latter towatdwthetleft asits l23 `sii/ingstabout.the ypivot-pin.-i-Z Undertthis action-fthe `loololoin b seated on the-perchf-iifvwill becaused to slide Iorf therefrom to dropdown onl the floorwlofthe casing Atoit-he vrightof the iinger -i'on-the pusher Gonsednently, as--the-:pusher V|55 .slides bach .toward Vvthe right agai-n,..as.iffiewed vvin Fig. 7, its-ringer EES willengage `'against the rings -r on the holobin b to 4slide the :latter along the oor .Mii and zadvance it into stripping-.position as :thestraight portion laeotthe spring- 135, see Fig. i, engages-fbetween the rings r on the head of the bobbin and the edge |94 of the clamping plate iii@ also engages between the rings on the opposite side of the head. The bobbin b is thus clamped xedly to be held in the position shown in. Fig. '7 with the tip end of its barrel projecting up through the slot 230 in the plate 228 of the member 225. The yarn y will then be drawn 01T from the bobbin by unwinding along its barrel as it is wound up on the drum or mandrel 45 during the continuous rotation of the latter by the driving means previously described. As the mandrel 45 continues to wind the yarn on its periphery the ngers 55, see Fig. 2, are reciprocated to push the coils along the tapered portion of the mandrel and through the opening i in the partition 5 to discharge the waste yarn into the compartment 4.

'Ihe stripping operation is timed to normally remove all the yarn remaining in the bunch on the bobbin before the bobbin is delivered into the chute I0 to drop down into position for transfer therefrom by the conveyor belt 2B in the manner explained in our prior patent application iirst referred to above. The delivery of the bobbin b onto the chute |B ocurs when a second bobbin is released from the perch I 2|] and advanced by the pusher |55 to carry it into stripping position. The movement of the second bobbin into stripping position causes its head to engage the previously stripped bobbin to advance it into the calipering means for testing it to detect any yarn remaining thereon. Referring to Figs. 4 and 5, as the bobbin h is advanced in this manner the edge of the xed blade 255 and the opposite blade 20S on the spring-pressed calipering arm 201 operate to engage with the bobbin adjacent its head. Consequently, if any yarn remains on the bobbin b at this point where the bunch is located the calipering means compri.- ing the plates 205 and 206 will grip the bobbin to prevent it from dropping down into the chute I0. The length of yarn y' extending from the bobbin b will continue to wind on the drum 45 as it enters the circular recess 232, see Fig. 6, in the edge of the plate 228 and drawing across its sharpened edge it will be severed from the bobbin while the latter is held by the calipering means.

The yarn will continue to be stripped from the next bobbin b which has been clamped in position and when the stripping operation is completed on this bobbin another bobbin will be displaced from the perch I2!) and carried along the oor |40 of the casing 2, see Fig. 4, to advance the two bobbins b and b in the same direction. Consequently, the second succeeding bobbin b if completely stripped will be advanced into position to drop into the chute I0 while at the same time it moves the incompletely stripped bobbin b into position to enter the chute 30. As the bobbin b compresses the spring 22|) to ride past the apex of its V-bend 22| the spring will react in the manner as previously explained to forcibly propel the bobbin b laterally into position to drop down into the supplementary chute 30 as indicated in Fig. 5. It has been explained that should the stripped bobbins crowd together in the space between the calipering means and jam in the opening to the chute l0 causing one of them to crowd against the edge of the chute 30, it will act to lift the latter upwardly by swinging it on its hinge 35 so that the several bobbins may be cleared automatically to drop down into the chute I0. This arrangement of the chute 30 is provided as a precaution to prevent bobbins being caught or stuck at the en- 12 trance to the chute |0 Where it might be diicult or inconvenient to reach them to clear the device. While the present improved device is herein 4 illustrated and described as embodied in a prexierred form of construction, it is to be understood that modifications may be made in the structure and arrangement of its parts without departing from the spirit or scope of the invention as expressed in the following claims. Therefore, without limiting ourselves in this respect, we claim:

1. A bobbin-stripper for removing the residue of yarn from spent bobbins comprising means for receiving and holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, means for testing each bobbin to detect whether the yarn has been completely removed therefrom, and means to segregate bobbins on which any yarn remains after a stripping operation.

2. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for receiving and holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, means for testing each bobbin to detect whether the yarn has been completely removed therefrom, and means operative by said testing means to segregate incompletely stripped bobbins from those completely stripped.

3. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for holding the bobbins, means for withdrawing the yarn from a bobbin, means for testing each bobbin to detect any yarn remaining thereon after a stripping operation, a conveyor for transporting stripped bobbins from the stripper, means for delivering completely stripped bobbins to the conveyor, and means for preventing delivery of incompletely stripped bobbins to said conveyor.

4. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, means for testing each bobbin to detect any yarn remaining thereon after a stripping operation, a conveyor for transporting the bobbins from the stripper, means for delivering completely stripped bobbins to said conveyor, and means for segregating incompletely stripped bobbins to prevent them from being delivered to the conveyor with the completely stripped bobbins.

5. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for receiving and holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, a container for receiving stripped bobbins, means for delivering the stripped bobbins into said container, means for testing each bobbin after a stripping operation to determine if the yarn is completely removed therefrom, a container for receiving incompletely stripped bobbins, and means for delivering the incompletely stripped bobbins to the last-named container.

6. A bobbin-stripper for removing the residue of yarn from spent bobbins comprising means for receiving and holding the bobbins, means for winding on the yarn to withdraw it from the bobbins, means for delivering stripped bobbins from the stripper, means for testing each bobbin to detect any yarn remaining thereon, and means Ioperated by said detecting means to prevent delivery of incompletely stripped bobbins with the completely stripped bobbins.

'7. A bobbin-stripper for removing the residue of yarn from spent bobbins including means for reoeivingsand holding thefshohbinsgfrotary means for-'minding'..on stheyiarn tomithdrawdt:iromrithe bambins, means forfarcalipering eaohnbohbin fatter @stripping` operation. toidetect'aany 1 yarn :remaining thereon,afscontainerffcrwreceiving :completely stripped bobbinsfandimeans operated bythe. calipei-ing :means :nto -prevent :in-completely stripped hohbins; from :beingdeliveredtoithe :container for completely stripped bobbins.

a8. .Aabohbinestripper for. :removing .the residue of syarn:fromsspentihobbinsfincluding means-gior receiving wan-d fholding the xbobbins, means for withdrawing-.the yarnifrom .the'.-loohhir-lsl to--istri-p thenL-.means for deliveringfstripped hobbinsirom the f.strinpingemeans, Ymeans-for calperingqeach bobbinnfter aistripping :operation tm detectany yarrnremaining) thereon, 'and ,means fiorf segreg at fzincom'pletely :stripped rbobbins :to 4.prevent them ifrom t-,beng delivered Hwith the completely strippedbobhins.

:19. ,eabobbin-r-stripper: for :removingf'the resid-ue of 'fyarn vfrom spent `dauphins@izo-1mmising fmeans erffreceivngiand holding the bobbins, means for iwithiiravving ithe yarnzlirom @reach ghehe-in, a vacont/einer for A:receiving stripped rhohoieos, means-,rior rdelivering .stripped .bohhins ;into @said containen-imeans fora; testing eachE .cbohbin after a stripping operationitordetectfanyIyarrrremaining thereomsa container:forzzpartially-stripped bohbins, and Imeans for f-:d'elivering :incompletely stnippedizbobbins into xsaidelast-tnemed zcontainer.

110.1A izfbohbinf-.stripper comprising :means :for holding hohbins, .z means eier "withdrawing zyarn from the bobbins to strip them, a chutefforfreceiving vstripped,:ioobbinsorleans z-for .testing each bobbin :to detect fany yarn remaining fthereon after t'.aw's'tripping foperation,.:and.:a v.second chute for .receiving z incompletely :stripped :":hobbins 1 to segregat eithem lfrom completeiy ,stripped Joohbins.

"11. In `a wbobhin-istripper, fmeansfor holding the bobbins'itherein,"means :for Kvvic-hdrawing :the yarn .from-.therhobbins to. strip them, :a .compartment '.TOrreceiving.;stripped' loolobins, .a chute #for delivering' stripped ybobbins finto said :compartment, .meansfor testing each'ibohbinaf-tera.: stripping .operaton a to detectany ,yarn `remaining thereon, a compartment Ilfor i yreceiving .partially stripped bobbins, az'chutefor 'delivering tpartially stripped h ho'ooins f into said :second-,named compartment, and :means .'ior; deliveringv :completely stripped bobbins into said first-named ehuterand partially '.rstripped vlooizvbins ,finto .said secondnamedzfchute tofsegregatezpartial'lyestripped'bobbins :from i completely stripped* bobbins.

d 12. A -ibobiiin-stripper .rcomprising casing, means".for receivingani holding the2 bobbns in said :feasing .ameans fior z.Withdravving 'I the yarn from r@the zoobbins rito -idenude them, 'a compartment'iintheaeasing :for receiving .stripped bohoins, means ifor. fdeliveringsaid lstripped.. bobbi-ns yinto said compartment, `means foritesting :reach fbobloin before it i'isdelivered: into. :said :compartment nto detect any yarn remaining thereon,.andsmeans for @preventing :incompletely stripped bobbins fromicbeing V.delivered vtinto fsaid compartment-to segregate H them Vfrom 1 completely stripped .hohbins.

`13.55A #bobbin-stripper Acomprising .za casing, means lfor -hold-ing xthe .hobbins in .the casing, means: for `removing the yarn. from, the ,hololoinsA a compartment/in the easing Afor. :stripped -bohbinsJ an opening for delivering Vvstripped.-..'oobhins ,in-to said compartment, means Mor moving stripped bobbins sinto ,position to zdeliverthem :through .said openingfmeans ioredeteotingfany -Vyarn 14 meziningfonzacbobbin:followingzaistrinpingnnperationarcompartmentfor.receiving inoornpletely stripped bobbins, :an 'opening painto said zlast named eompartment, viand .means operative @to deliver :incompletely .stripped bobbins `through the :second opening ,into thezsecond compartment.

v1.4. In ia .rbobbin-strippen ra fcasing vihaving means :for holding :the-.bobbing z-meansiforastripping residual yarnffromathe bobbinspawcornpartment :in the :casing fior -reeeiving stripped-iboobins, vfresilientlyoperated foaliperng means for engaging each trhobbin .to detect Aany yarn memaining thereon` after stripping roperation,s.an opening beneath saidtcalipering means. fordelivering ...completely vstripped `:hobbins `into said eompartmenha :second f compartment 4in vthe casing for receiving incompleteiy'strippedfbobbins, andfmeans beyond `the foalipering Imeans fior fdeliveri-ng lincompletely :stripped "bobbins into :said second .compartment `to f segregate 4them from completely stripped bobbins.

"1li5. #A vloobloin-stripper comprising la casingflfor receiving the bobbins, means for supporting the bobbinsf-in the-casingfin position to bestripped, means for-withdrawing the yarnirom-a"bobbin to strip it, a compartment-in the '.ca's-ingifor 'receiving'fstripped iooohins,l an opening "beyond the notabili-supporting 1means-*for delivering stripped Dobbins iinto vsaid compartment, means -for1-mov ing -a A strippedfbohbin -into'-position `:tol deliver yit through'saidcpen-ing, -meansoVerlying the-opening 'fortesting 4eachboohin tofdetect any A-yarrrremaining'fthereonfa second compartment in the casing for -receiving incompletely `stripped bob" bins, vanfopeningloeyondfthe testing meansiorreceiving inoompletelyI stripped A`loobhins mtoideliver them tothe-second compartment,and-means for transferring the bobbins from the holdingmeans to the' testingfmeans-'wherebycompletelyr stripped bobbins Jmay `-loe -caused toy deliver through the opening into the rstenamed coinpartmentfand incomplete-lyv stripped bobbins---may ybe forced uout of Lthe testing-means Vfor -`delivery `i'fhrongio 'the lasti-'named'opening -vto the -compartmentfor -incompletely'stripped bobbins.

supportinghobhins in said casing, `means-for withdrawing the yarn from"bobhinsv helden-said supporting means, :a compartment for receiving I stripped* bObbinS, a chute for receiving stripped hobbinsto deliver'them to said `-compartment,- a second compartment for receiving incompletely strppedfbobbins, a chute sepa-rate' from thejrst chute andleading .tothe second compartment for incompletely strippedgbobbins, calipering means inthe casingfordetecting any residue of yarn re-A maining on' the bobbins after a stripping'operation, means for advancing. eachboboin into the caliperingrmeans, an opening .beneathihe calipering meansffor 'delivering ycompletely stripped bohhins therethronghlinto' 'the first-named chute,

openingibeyondthe calipering means'ffor receiving .L incoinpletely 'stripped'. hobbins to deliver.

,bobhns a.second.compartment .arranged .below said rst compartment, a third compartment arranged below the second compartment, means in the rst compartment for withdrawing the yarn from the bobbins, calipering means for engaging each bobbin to detect any yarn remaining thereon, an opening beneath said calipering means, a chute leading from said opening into the second compartment, a second chute for delivering incompletely stripped bobbins into the third compartment, an opening beyond the calipering means to deliver incompletely stripped bobbins to said last-named chute, and means to move the bobbins progressively to the calipering means whereby the completely stripped bobbins will be delivered into the mst-named chute and incompletely stripped bobbins will be moved beyond the calipering means for delivery into the second-named chute.

18. In a bobbin-stripper, a casing for containing and holding the bobbins, means for withdrawing the yarn from the bobbins to strip them, calipering means for testing each bobbin after a stripping operation to detect any yarn remaining thereon, a compartment for receiving stripped bobbins, means for delivering completely stripped bobbins from the calipering means into said compartment, a compartment for incompletely stripped bobbins, means for advancing the bobbins into the calipering means, means for delivering completely stripped bobbins from the calipering means to the rst-named compartment and advancing incompletely stripped bobbins beyond the calipering means for delivery to the second compartment to segregate them from the completely stripped bobbins, and a conveyor having means entering the compartment for completely stripped bobbins and attaching the bobbins thereto to transport them from the stripper.

19. In a bobbin-stripper having means for receiving and holding the bobbins to be stripped, a rotary mandrel for winding on the yarn to withdraw it from the bobbins, a rotary member located above said mandrel, means for driving said mandrel and rotary member, and resilient fingers carried by said rotary member to adapt them to engage the yarn trailing from a bobbin entering the stripper and carry it to the mandrel for attachment thereto.

20. In a bobbin-stripper, the combination of means for holding bobbins to strip the yarn therefrom, a rotary mandrel for winding on the yarn, a member arranged above said mandrel and rotatable on an axis normal to that of the mandrel, and resilient fingers projecting from said rotary member to adapt them to sweep against the length of yarn trailing from a bobbin to carry it across the mandrel for attachment thereto.

21. In a bobbin-stripper comprising a casing for receiving and holding the bobbins to be stripped, a rotary mandrel in said casing for winding on the yarn to withdraw it from the bobbins, a brush above said mandrel having its bristles arranged to engage the yarn trailing from a bobbin as it descends into the casing, a rotary member above the mandrel, resilient fingers carried by said rotary member, a rest beneath the fingers, and an abutment `adapted to engage said lingers during their rotation by said member to cause them to ileX as they wipe thereagainst, said resilient lingers acting to sweep the yarn out of the brush and across the mandrel for attachment thereto.

22. In a bobbin-stripper of the type indicated, the combination of a rotary mandrel for winding on the yarn to withdraw it from bobbins'held in the stripper, a plate overlying said mandrel, a member rotatable above said plate, resilient fingers carried by said member extending radially outward therebeyond to revolve above the plate, and means to rotate said member to cause the fingers to carry the yarn trailing from a bobbin around the plate and across the mandrel for attachment thereto.

23. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for ixedly holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, a perchA for receiving the bobbin prior to its entrance into the holding means, and a hinged shelf above the perch adapted to interrupt the descent of the bobbin onto the perch, said shelf having means at its end engageable with the barrel of the bobbin as its butt end moves down onto the perch to sustain the bobbin in erect position.

24. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for fiXedly holding the bobbins, means for withdrawing the yarn from -a bobbin to strip it, a perch for receiving the bobbin prior to its entrance into the holding means, a pivoted shelf above the perch, a weight for counterbalancing said shelf to maintain it in horizontal relationship, said shelf being adapted to be struck by a bobbin during its descent to tilt said shelf downwardly, and means carried by the shelf for engaging the barrel of the bobbin as the latter moves down onto the perch to sustain it in erect position.

25. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for flxedly holding the bobbins, means for withdrawing the yarn from a bobbin applied to the holding means, a perch for receiving the bobbin thereon prior to applying it to the holding means, a shelf pivoted above said perch, means for holding said perch normally in horizontal relationship, an arm extending downwardly from the perch in inclined relation thereto, and an opening at the end of the shelf for receiving the barrel of the bobbin to guide it during its fall onto the perch, said arm on the shelf adapted 'to engage against the side of the casing to maintain the shelf in positionv with its opening engaged with the barrel of the bobbin to maintain it in erect position seated on the perch.

26. A bobbin-stripper comprising means `for i'ixedly holding the bobbins, means for engaging the bobbins with the holding means, means for withdrawing the yarn from a bobbin held in the holding means to strip it, means for calipering the bobbins after a stripping operation to detect any yarn remaining thereon, means for advancing the bobbins from the holding means into the calipering means, and means for engaging the length of yarn being withdrawn from an incompletely stripped bobbin in the calipering means to sever the yarn therefrom.

27. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, means for testing each bobbin after a stripping operation to detect any yarn remaining thereon, and means operative during the testing operation to sever the length of yarn being withdrawn from a bobbin containholding the bobbins, means for withdrawing theyarn from a bobbin to strip it, means for testing each bobbin to detect any yarn remaining thereon after a stripping operation, a container for completely stripped bobbins, means for delivering completely stripped bobbins into said container, a second container, means for delivering incompletely stripped bobbins into said second container, and means operative during the testing of an incompletely stripped bobbin to sever the length of yarn being withdrawn therefrom.

29. A bobbin-stripper for removing residual yarn from spent bobbins comprising means for holding the bobbins, means for withdrawing the yarn from a bobbin to strip it, means for testing each bobbin to detect any yarn remaining thereon after a stripping operation, a conveyor for transporting stripped bobbins from the stripper, means for delivering completely stripped bobbins to said of yarn from spent bobbins comprising means for withdrawing the yarn from a bobbin to strip it, means for testing each bobbin to detect whether the yarn has been completely removed therefrom, and means to segregate bobbins on which any yarn remains after a stripping operation.

WILLIAM V. GOODHUE. ROBERT E. MORTON.

No references cited. 

